(1) Tested Sylvania 6CU8 Tube with Box Date Code ce EEY Triode Pentode Tube

(1) Tested Strong Sylvania 6JC8 Tube with Box Date Code NR ECW Triode Pentode

(1) Tested Sylvania 12JN8 Tube with Box Date Code YAA Triode Pentode Tube (a)

(1) Tested Sylvania 12JN8 Tube with Box Date Code NR AAA Triode Pentode Tube (b)

(1) Tested Philco 6AU8A Tube with Box Date Code 6504 Triode Pentode

(1) Tested RCA 6KA8 Tube with Box Date Code GJ Triode Pentode Tube

(1) Tested GE 6JV8 Tube with Box Date Code FI General Electric Triode Pentode

(1) Tested Sylvania 6JT8 Tube with Box Date Code bk Sylvania 6JT8 Triode Pentode